Colonel Gaddafi has called for Libya to be “engulfed in flames” in an audio message carried by a loyalist TV channel.

In Tripoli, human rights workers are trying to salvage records from inside Libya’s most notorious prison, Abu Salim.

Over the course of several decades, thousands of Libyans are said to have been jailed and tortured in the prison by members of the Gaddafi regime.

Jeremy Bowen reports from Tripoli.